1.In the story, the vet must be _________.

　A. the farmer's friend B. a milk factory

　C. a hospital for cows D. a doctor for animals

5.C。哈雷彗星每七十六年才能看到一次。再结合“…the last time it came close to the sun and the earth was in the year 1986.”这句话的意思，即可得到答案。

　　　 上面的五个问题我们都可以很容易的在原文找到对应的部分，这种题实际上是最不容易出错误的，因为只要你找到了对应句，即使有个别的单词不能理解，也能够答对，下面再来试一文章，看看你的准确率哦。

Passage 2　

　　　　 A farmer had a cow. He took very good care of this cow and one day when it was ill, he was very worried. He telephoned the vet.

　“What’s the problem?” The vet asked him when he arrived.

　“My cow's ill,” the farmer said. “I don’t know what's the matter with her. She’s lying down and won’t eat. She's making a strange noise.”

　The vet looked over the cow. "She's certainly ill," he said, "and she needs to take some very strong medicine."

　He took a bottle out of his box, put two pills into his hand and said, "Give her these. The pills should make her better."

　 “How should I give them to her?” the farmer asked.

　The vet gave him a tube (管子)and said, "Put this tube in her mouth, then put the pills in the tube and blow. That'll make it."

　The next day the vet came to the farm again. The farmer was sitting outside his house and looked more worried.

　“How's your cow?” the vet asked.

　“No change,” the farmer said, “and I’m feeling very strange myself.”

　“Oh?” the vet said, "Why?"

　“I did what you said,” the farmer answered. “I put the tube in the cow's mouth and then put two pills down it.”

　“And?” the vet asked.

　“The cow blew first,” the farmer said.

4.C。“Some comets move out of our sight and never come back. Others keep coming back at regular times.”一句是答案的出处。

3.D。由第五段的首句“Many people perhaps have seen a comet.”可知。

2.C。根据“…is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock.”这句话即能得出答案。

1.D。“Like the earth, a comet goes round the sun, but…”是判断本题的根据。

5.Halley’s Comets came back _____.

　　　 A. in 1990 B. in 1980 C. in 1986 D. in 1989

Passage 1

　[答案与解析]本文向我们介绍了有关彗星方面的知识。与地球一样，彗星也是绕太阳旋转的，它本身不发光，靠反射太阳的光而发亮。短文中还介绍了彗星的成因，它拖着的长尾巴是如何形成的以及著名的哈雷彗星名字的由来。

4.Some comets keep coming back ________.

　A. at any time B. at noon C. at regular times D. at daytime

3.Maybe many people _______.

　A. haven’t seen any comets B. have seen all comets

　C. have seen a comet at daytime D. have seen a comet

2.A large part of a comet is ______.

　A.water and rock

　　　　 B. water frozen into pieces of ice and mixed with iron

　C. ice, iron and rock dust

　　　　 D. only a few big pieces of rock